AC Adapter K30244, Canon brand. I believe it was a genuine Canon printer product. Product Details Input: AC 100V-240V 50/60Hz 0.7-0.4A Output: DC 16V 1.8A Plug Type: Straight Plug Outer Diameter: 6.5mm Plug Inner Diameter: 4.3mm Plug Length: 9.5mm Center + ※With center pin Continuity confirmed with a tester. Please ask if you have any questions. I will answer to the best of my ability. ※Please understand that this is a used item that was at home. ※Shipping method may change without notice.